Tender : Bid Document : BGL/100/2010-11 PRE BID QUERIES FOR CNG & CITY GAS DISTRIBUTION FOR HYDERABAD Sl. Clause Description in tender documents Clarifications / 1. ARTICLE 19 :Price If the contractor fails to complete the We request you to keep the PRS clause as follows:- Reduction Schedule Services.0.5% of the total contract If the contractor fails to complete the services according to 19.1 On Page 47 of 107. price.. total contract price excluding the schedule mentioned in tender document, the contract cost of AMC, if any. price shall reduced @ 0.5% of the total undelivered portion of supply per week delay or part thereof to maximum 5% of the total undelivered portion not the total contract value. 2. ARTICLE 27 :Termination Of contract 27.3 Termination for Convenience. On Page 49 of 107. The OWNER may, by written for the owners convenience.termination becomes effective. If the order is terminated at owner s convenience, without reasons attributable to the supplier, we request you to pay the termination charges which shall be informed subsequently. 3. ARTICLE 31 : Guarantee/Warranty 31.2 on Page 50 of 107. After the completion of test run.shall be issued by the owner. Please note that the start of O&M during defect liability period shall be 30 days from the receipt of package at site and so on for 2nd and 3rd year. We have not considered the starting of defect liability period after successful completion of PT. Tender condition The charges for O&M services shall be applicable as per the above mentioned time period. 4. ARTICLE 31 : Guarantee/Warranty 31.4 on Page 50 of 107. If during the period of for the extended period shall also be passed on to the owner. Kindly give your acceptance to the same. We shall replace / repair any equipment found defective during warranty period, due to any defects arising from faulty design, material or workmanship. We shall not offer any CPBG against such repair / replacement. Also, the warranty of the repaired / replaced component Page 1 of 6
Sl. Clause Description in tender documents Clarifications / shall be limited to the package warranty only. We donot give extended warranty. 5. ARTICLE 43 : Statutory Approval 43.1 on Page 57 of 107. 6. SECTION 9. Material requisition 1.5 on Page 5 of 118. 7. SECTION 10. Special 1.4 on Page 9 of 118 The approval from any authority.contractor well ahead shall be responsibility of the contractor. Design, Engineering,.3.7KW,.with all accessories and auxiliaries. At the designed site fencing of structures prior to leaving the sites. Kindly note that the civil & site work is not in our Scope. Our scope is limited to the supply & running of the package. Thus, the approval from any authority required as per central /state rules shall not be in our scope. Same shall be in scope of BGL. Please note that for 1200SCMH Engine driven package an air compressor of 7.5 KW motor & 1000 liters air receiver is required. We shall offer the above and not the 3.7kW air compressor. Please note that our scope of supply shall include design, engineering, manufacturing, inspection & testing, transportation to site, unloading at site, commissioning, & Performance trial. The safety, storage, fencing & watch & ward of the Packages at site shall be in purchaser s scope. Any statutory approval for erection and commissioning of the compressor package is not in the scope of bidder is correct. Air receiver of 1000 water litre capacity is required. Accepted 8. SECTION 10. Special 3.1.1 (B ) on Page 14 of 118 9. SECTION 10. Special 3.1.3 on Page 14 of 118 5% payment : on completion i.e. 20 months from date of FOT site (actual). In case the PG testing & field 150 days of supply i.e 22 months from date of FOT site(actual). We request you to keep the following payment term - If erection is not started within 45 days after supply due to non availability of site/gas, payment against erection and commissioning shall be released against receipt of bank guarantee of the said amount to remain valid for a period of 1 year after completion of 45 days. We request you to keep the following payment Term- If the PT could not be executed within 90 days from the date of supply due to reason directly attributable to the owner, the balance 10% of supply value shall be released after deducting PRS clause if any and on submission of BG Page 2 of 6
Sl. Clause Description in tender documents Clarifications / of equivalent amount which shall remain valid for a period of 1 tear after 90 days of supply. Design engineering We request you to accept completion period as 6 months.completion period 5 months from date of Fax of intent. from date of Fax of intent. 10. SECTION 10. Special 20. Complete Schedule on Page 21 of 118 11. SECTION 12. Technical 1.6 Scope of supply for each compressor package on Page 28 of 118. 12. SECTION 12. Technical 2.0 Utilities & Battery Limits 2.1.2 on Page 33 of 118. 13. SECTION 12. Technical 3..0 Equipment Qualification Criteria 3.1 on Page 34 of 118. Main incoming cable from owner PDB to.lugs etc. as required. Air compressor of capacity 3.7 kw be provided in the system. The gas compressor model offered.5000 hours without any major overhaul as on the bid due date. Kindly let us know the running length of the cable to be considered. Please note that for 1200SCMH Engine driven package an air compressor of 7.5 KW motor & 1000 liters air receiver is required. We shall offer the above and not the 3.7kW air compressor. We request you to keep the following EQC- 3.1 Gas Compressor a) The offered model of Gas Compressor shall be from the existing manufacturing range of the Gas Compressor manufacturer. At least 1 identical or higher capacity units must have been manufactured, tested and supplied by the manufacturer in the last five years and both units must have been operating satisfactorily in the field for a period of at least 5000 hours without any major break down as on the bid due date. OR b) The offered model shall be manufactured under license aggrement with the compressor manufacturer who complies to above clause 3.1.a above. Approx. 40 m. However actual cable lengths depend upon that particular site. is correct. Air receiver of 1000 water litre capacity is required. is correct. 14. SECTION 12. Technical Single plunger point shall be Please note that as per our standard practice the lubricator Accepted Page 3 of 6
Sl. Clause Description in tender documents Clarifications / provided at each lubrication point. 4.7 Cylinder & packing lubrication. 4.7.1, 4.7.2,4.7.3 on Page 37 of 118. 15. SECTION 12. Technical 4.8 Cooling system 4.8.2 on Page 38 of 118. 16. SECTION 12. Technical 4.9 Seperators & oil Removal system. 4.9.6. on Page 39 of 118. Air cooled inter stage and.vibration level in the offer. All the pressure, temperature, gas flow meter, oil.. outside the canopy. will be divider block type. We do not provide pump to point lubrication. We have offered this system in all our previous supplies and all the installations are running successfully without any problems. This is applicable for Single Plunger per point lubricator, thus not offered. Please let us know your acceptance. We request you to keep the safety margin as 20% on the design case and the suitability of cooling surface area of the air exchanger shall be checked for maximum suction pressure case. Kindly confirm if same is acceptable. Also, as code stamping increase the lead time of the package, we request you to keep the Third Party Inspection of the gas sections. We shall provide vibration switch on the compressor frame. Vibration switch on AHE is not required as our system is designed such that it leads to nominal vibrations & all are packages till date with same philosophy are working without any problems. Kindly confirm if same is acceptable. Please note that Gas pressure, temperature, oil pressure will be visible from outside the package on guideboard. The gas flow shall be visible in the PLC. Oil level & coolant temperatures shall be mounted locally. This is the standard system supplied to all gas companies. is correct Page 4 of 6
17. SECTION 12. Technical 4.9 Seperators & oil Removal system. Oil recovery pot shall be.. level gauge. Capacity shall be min 15 WL. Please note that we shall not provide SRV on Oil recovery pot, as it is connected to BDV and SRV is mounted on BDV. A single isolation valve shall be provided in the drain of ORV. Also LG will not be provided. 4.9.6. on Page 39 of 118. 18. SECTION 12. Technical 4.9 Seperators & oil Removal system. 4.9.7. on Page 38 of 118. 19. SECTION 12. Technical 5.10 Gas engine 5.10.8. on Page 41 of 118. Coalescent super fine filters..at 40kg/cm2G.however mechanical design shall be based on safety set pressure. Bidder shall supply fuel gas conditioning shall be incorporated by the bidder. Please note that the filtration rating of discharge filter shall be 1 micron and the oil carryover shall be restricted to < 5 PPM in discharge. Filter shall be suitable for the maximum flow for the design suction pressure range. This is the standard practice used by all the gas companies in India. Also filter will be provided with automatic drain system with single isolation valve. Please note that we shall not be provide a separate fuel gas conditioning skid. However, the PRV, safety valve, flow meter & all necessary instrumentation as required shall be part of main skid only. Accepted; however fuel gas filter as per tender condition has to be provided 20. SECTION 12. Technical 5.11 Enclosure 5.11.8. on Page 42 of 118. 21. SECTION 12. Technical 6.6.11. ( O) Preferred Makes on Page 50 of 118. 22. 10.3 Compensation against gas leakage on Page 58 of 118. The compressor shall be located.kod..during detailed engineering stage. SS tubing,tube fittings.sweden. Bidders are to ensure that leakage of gas.o&m monthly running bill. The proposed CNG package has suction volume bottle at each stage suction and discharge volume bottle at final stage discharge. The volume bottles at suction are connected to condensate drain system through auto-drain system. These volume bottles shall act as scrubbers/ condensate removal system. This scheme is successfully implemented in all our packages and running successfully in field without any trouble. We propose Additional vendor as Tubacex for tube fittings. Please note that the offered gas compressor is non pressurized crankcase breather type & the normal gas loss from packing of these type of compressors amount to 1 % of total package loss. Accepted Page 5 of 6
23. 5.11.1 on page 42 of 118 The maximum allowable temperature ventilation fans.before starting main compressor. Same is accepted by all gas companies in India. So we request you to accept the same. The design of CNG package is such that due to the ducting arrangement, the flow of air is continuous and there is no risk of entrapped gas / high temperature inside the package. We thus request you to remove the ventilation fan. Page 6 of 6